<main class="flex">
	<div class="column-main">
		<h1>Team collaboration done right</h1>
	</div>
	<div class="column-sidebar">
		<div class="tile">
			<form>
				<h3>Login</h3>
			</form>
		</div>
	</div>
</main>
<style>
.flex{
	display:flex;
}
.column-main{
	flex:2;
}
.column-sidebar{
	flex:1;
}
flex-grow:2;
flex-shrink:1;
flex-basis:0%;
</style>